1.identical twin n. 同卵双生,全等双生
Isn't it amazing that Mr. Hak - Tak and Mrs. Hak - Tak each have an identical twin!
好奇怪啊, 哈达 夫妇每人都有一个一模一样的双胞胎!
2.sterile adj. 不育的;无菌的;贫瘠的;不毛的;枯燥乏味的
He always made sure that any cuts were protected by sterile dressings.
他总是确保所有伤口都用无菌的敷料包好 。
3.radiation n. 辐射;发光;放射物
They suffer from health problems and fear the long term effects of radiation.
他们受健康问题的困扰,还担心遭受辐射造成的长期影响 。